fixup: address review comments

HarshithaKP · HarshithaKP · commit 410b6e65fe1c · 2020-02-21T05:02:19.000-05:00
diff --git a/doc/api/async_hooks.md b/doc/api/async_hooks.md
@@ -172,9 +172,9 @@ doing this the otherwise infinite recursion is broken.
 
 ### Class: `AsyncHook`
 
-The class `AsyncHook` exposes interface for tracking lifetime events
+The class `AsyncHook` exposes an interface for tracking lifetime events
 of asynchronous operations. Using a unique ID per asynchronous call,
-it helps associating method calls that otherwise do not appear together
+it helps with associating method calls that otherwise do not appear together
 in a typical call stack.
 
 #### `asyncHook.enable()`
